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1da177e4 LT |
1 | |
2 | Advanced Linux Sound Architecture - Driver | |
3 | ========================================== | |
4 | Configuration guide | |
5 | ||
6 | ||
7 | Kernel Configuration | |
8 | ==================== | |
9 | ||
10 | To enable ALSA support you need at least to build the kernel with | |
11 | primary sound card support (CONFIG_SOUND). Since ALSA can emulate OSS, | |
12 | you don't have to choose any of the OSS modules. | |
13 | ||
14 | Enable "OSS API emulation" (CONFIG_SND_OSSEMUL) and both OSS mixer and | |
15 | PCM supports if you want to run OSS applications with ALSA. | |
16 | ||
17 | If you want to support the WaveTable functionality on cards such as | |
18 | SB Live! then you need to enable "Sequencer support" | |
19 | (CONFIG_SND_SEQUENCER). | |
20 | ||
21 | To make ALSA debug messages more verbose, enable the "Verbose printk" | |
22 | and "Debug" options. To check for memory leaks, turn on "Debug memory" | |
23 | too. "Debug detection" will add checks for the detection of cards. | |
24 | ||
25 | Please note that all the ALSA ISA drivers support the Linux isapnp API | |
26 | (if the card supports ISA PnP). You don't need to configure the cards | |
27 | using isapnptools. | |
28 | ||
29 | ||
30 | Creating ALSA devices | |
31 | ===================== | |
32 | ||
33 | This depends on your distribution, but normally you use the /dev/MAKEDEV | |
34 | script to create the necessary device nodes. On some systems you use a | |
35 | script named 'snddevices'. | |
36 | ||
37 | ||
38 | Module parameters | |
39 | ================= | |
40 | ||
41 | The user can load modules with options. If the module supports more than | |
42 | one card and you have more than one card of the same type then you can | |
43 | specify multiple values for the option separated by commas. | |
44 | ||
45 | Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. | |
46 | ||
47 | Module snd | |
48 | ---------- | |
49 | ||
50 | The core ALSA module. It is used by all ALSA card drivers. | |
51 | It takes the following options which have global effects. | |
52 | ||
53 | major - major number for sound driver | |
54 | - Default: 116 | |
55 | cards_limit | |
56 | - limiting card index for auto-loading (1-8) | |
57 | - Default: 1 | |
58 | - For auto-loading more than one card, specify this | |
59 | option together with snd-card-X aliases. | |
60 | device_mode | |
61 | - permission mask for dynamic sound device filesystem | |
62 | - This is available only when DEVFS is enabled | |
63 | - Default: 0666 | |
64 | - E.g.: device_mode=0660 | |
65 | ||
66 | ||
67 | Module snd-pcm-oss | |
68 | ------------------ | |
69 | ||
70 | The PCM OSS emulation module. | |
71 | This module takes options which change the mapping of devices. | |
72 | ||
73 | dsp_map - PCM device number maps assigned to the 1st OSS device. | |
74 | - Default: 0 | |
75 | adsp_map - PCM device number maps assigned to the 2st OSS device. | |
76 | - Default: 1 | |
77 | nonblock_open | |
78 | - Don't block opening busy PCM devices. | |
79 | ||
80 | For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of | |
81 | the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped | |
82 | to PCM #0 of the card #0. | |
83 | For changing the second or later card, specify the option with | |
84 | commas, such like "dsp_map=0,1". | |
85 | ||
86 | nonblock_open option is used to change the behavior of the PCM | |
87 | regarding opening the device. When this option is non-zero, | |
88 | opening a busy OSS PCM device won't be blocked but return | |
89 | immediately with EAGAIN (just like O_NONBLOCK flag). | |
90 | ||
91 | Module snd-rawmidi | |
92 | ------------------ | |
93 | ||
94 | This module takes options which change the mapping of devices. | |
95 | similar to those of the snd-pcm-oss module. | |
96 | ||
97 | midi_map - MIDI device number maps assigned to the 1st OSS device. | |
98 | - Default: 0 | |
99 | amidi_map - MIDI device number maps assigned to the 2st OSS device. | |
100 | - Default: 1 | |
101 | ||
102 | Common parameters for top sound card modules | |
103 | -------------------------------------------- | |
104 | ||
105 | Each of top level sound card module takes the following options. | |
106 | ||
107 | index - index (slot #) of sound card | |
108 | - Values: 0 through 7 or negative | |
109 | - If nonnegative, assign that index number | |
110 | - if negative, interpret as a bitmask of permissible | |
111 | indices; the first free permitted index is assigned | |
112 | - Default: -1 | |
113 | id - card ID (identifier or name) | |
114 | - Can be up to 15 characters long | |
115 | - Default: the card type | |
116 | - A directory by this name is created under /proc/asound/ | |
117 | containing information about the card | |
118 | - This ID can be used instead of the index number in | |
119 | identifying the card | |
120 | enable - enable card | |
121 | - Default: enabled, for PCI and ISA PnP cards | |
122 | ||
123 | Module snd-ad1816a | |
124 | ------------------ | |
125 | ||
126 | Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips. | |
127 | ||
128 | port - port # for AD1816A chip (PnP setup) | |
129 | mpu_port - port # for MPU-401 UART (PnP setup) | |
130 | fm_port - port # for OPL3 (PnP setup) | |
131 | irq - IRQ # for AD1816A chip (PnP setup) | |
132 | mpu_irq - IRQ # for MPU-401 UART (PnP setup) | |
133 | dma1 - first DMA # for AD1816A chip (PnP setup) | |
134 | dma2 - second DMA # for AD1816A chip (PnP setup) | |
135 | ||
136 | Module supports up to 8 cards, autoprobe and PnP. | |
137 | ||
138 | Module snd-ad1848 | |
139 | ----------------- | |
140 | ||
141 | Module for sound cards based on AD1848/AD1847/CS4248 ISA chips. | |
142 | ||
143 | port - port # for AD1848 chip | |
144 | irq - IRQ # for AD1848 chip | |
145 | dma1 - DMA # for AD1848 chip (0,1,3) | |
146 | ||
147 | Module supports up to 8 cards. This module does not support autoprobe | |
148 | thus main port must be specified!!! Other ports are optional. | |
149 | ||
150 | Module snd-ali5451 | |
151 | ------------------ | |
152 | ||
153 | Module for ALi M5451 PCI chip. | |
154 | ||
155 | pcm_channels - Number of hardware channels assigned for PCM | |
156 | spdif - Support SPDIF I/O | |
157 | - Default: disabled | |
158 | ||
159 | Module supports autoprobe and multiple chips (max 8). | |
160 | ||
161 | The power-management is supported. | |
162 | ||
163 | Module snd-als100 | |
164 | ----------------- | |
165 | ||
166 | Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips. | |
167 | ||
168 | port - port # for ALS100 (SB16) chip (PnP setup) | |
169 | irq - IRQ # for ALS100 (SB16) chip (PnP setup) | |
170 | dma8 - 8-bit DMA # for ALS100 (SB16) chip (PnP setup) | |
171 | dma16 - 16-bit DMA # for ALS100 (SB16) chip (PnP setup) | |
172 | mpu_port - port # for MPU-401 UART (PnP setup) | |
173 | mpu_irq - IRQ # for MPU-401 (PnP setup) | |
174 | fm_port - port # for OPL3 FM (PnP setup) | |
175 | ||
176 | Module supports up to 8 cards, autoprobe and PnP. | |
177 | ||
178 | Module snd-als4000 | |
179 | ------------------ | |
180 | ||
181 | Module for sound cards based on Avance Logic ALS4000 PCI chip. | |
182 | ||
183 | joystick_port - port # for legacy joystick support. | |
184 | 0 = disabled (default), 1 = auto-detect | |
185 | ||
186 | Module supports up to 8 cards, autoprobe and PnP. | |
187 | ||
188 | Module snd-atiixp | |
189 | ----------------- | |
190 | ||
191 | Module for ATI IXP 150/200/250 AC97 controllers. | |
192 | ||
193 | ac97_clock - AC'97 clock (defalut = 48000) | |
194 | ac97_quirk - AC'97 workaround for strange hardware | |
195 | See the description of intel8x0 module for details. | |
196 | spdif_aclink - S/PDIF transfer over AC-link (default = 1) | |
197 | ||
198 | This module supports up to 8 cards and autoprobe. | |
199 | ||
200 | Module snd-atiixp-modem | |
201 | ----------------------- | |
202 | ||
203 | Module for ATI IXP 150/200/250 AC97 modem controllers. | |
204 | ||
205 | Module supports up to 8 cards. | |
206 | ||
207 | Note: The default index value of this module is -2, i.e. the first | |
208 | slot is excluded. | |
209 | ||
210 | Module snd-au8810, snd-au8820, snd-au8830 | |
211 | ----------------------------------------- | |
212 | ||
213 | Module for Aureal Vortex, Vortex2 and Advantage device. | |
214 | ||
215 | pcifix - Control PCI workarounds | |
216 | 0 = Disable all workarounds | |
217 | 1 = Force the PCI latency of the Aureal card to 0xff | |
218 | 2 = Force the Extend PCI#2 Internal Master for Efficient | |
219 | Handling of Dummy Requests on the VIA KT133 AGP Bridge | |
220 | 3 = Force both settings | |
221 | 255 = Autodetect what is required (default) | |
222 | ||
223 | This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardware | |
224 | EQ, mpu401, gameport. A3D and wavetable support are still in development. | |
225 | Development and reverse engineering work is being coordinated at | |
226 | http://savannah.nongnu.org/projects/openvortex/ | |
227 | SPDIF output has a copy of the AC97 codec output, unless you use the | |
228 | "spdif" pcm device, which allows raw data passthru. | |
229 | The hardware EQ hardware and SPDIF is only present in the Vortex2 and | |
230 | Advantage. | |
231 | ||
232 | Note: Some ALSA mixer applicactions don't handle the SPDIF samplerate | |
233 | control correctly. If you have problems regarding this, try | |
234 | another ALSA compliant mixer (alsamixer works). | |
235 | ||
236 | Module snd-azt2320 | |
237 | ------------------ | |
238 | ||
239 | Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only). | |
240 | ||
241 | port - port # for AZT2320 chip (PnP setup) | |
242 | wss_port - port # for WSS (PnP setup) | |
243 | mpu_port - port # for MPU-401 UART (PnP setup) | |
244 | fm_port - FM port # for AZT2320 chip (PnP setup) | |
245 | irq - IRQ # for AZT2320 (WSS) chip (PnP setup) | |
246 | mpu_irq - IRQ # for MPU-401 UART (PnP setup) | |
247 | dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup) | |
248 | dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup) | |
249 | ||
250 | Module supports up to 8 cards, PnP and autoprobe. | |
251 | ||
252 | Module snd-azt3328 | |
253 | ------------------ | |
254 | ||
255 | Module for sound cards based on Aztech AZF3328 PCI chip. | |
256 | ||
257 | joystick - Enable joystick (default off) | |
258 | ||
259 | Module supports up to 8 cards. | |
260 | ||
261 | Module snd-bt87x | |
262 | ---------------- | |
263 | ||
264 | Module for video cards based on Bt87x chips. | |
265 | ||
266 | digital_rate - Override the default digital rate (Hz) | |
267 | load_all - Load the driver even if the card model isn't known | |
268 | ||
269 | Module supports up to 8 cards. | |
270 | ||
271 | Note: The default index value of this module is -2, i.e. the first | |
272 | slot is excluded. | |
273 | ||
274 | Module snd-ca0106 | |
275 | ----------------- | |
276 | ||
277 | Module for Creative Audigy LS and SB Live 24bit | |
278 | ||
279 | Module supports up to 8 cards. | |
280 | ||
281 | ||
282 | Module snd-cmi8330 | |
283 | ------------------ | |
284 | ||
285 | Module for sound cards based on C-Media CMI8330 ISA chips. | |
286 | ||
287 | wssport - port # for CMI8330 chip (WSS) | |
288 | wssirq - IRQ # for CMI8330 chip (WSS) | |
289 | wssdma - first DMA # for CMI8330 chip (WSS) | |
290 | sbport - port # for CMI8330 chip (SB16) | |
291 | sbirq - IRQ # for CMI8330 chip (SB16) | |
292 | sbdma8 - 8bit DMA # for CMI8330 chip (SB16) | |
293 | sbdma16 - 16bit DMA # for CMI8330 chip (SB16) | |
294 | ||
295 | Module supports up to 8 cards and autoprobe. | |
296 | ||
297 | Module snd-cmipci | |
298 | ----------------- | |
299 | ||
300 | Module for C-Media CMI8338 and 8738 PCI sound cards. | |
301 | ||
302 | mpu_port - 0x300,0x310,0x320,0x330, 0 = disable (default) | |
303 | fm_port - 0x388 (default), 0 = disable (default) | |
304 | soft_ac3 - Sofware-conversion of raw SPDIF packets (model 033 only) | |
305 | (default = 1) | |
306 | joystick_port - Joystick port address (0 = disable, 1 = auto-detect) | |
307 | ||
308 | Module supports autoprobe and multiple chips (max 8). | |
309 | ||
310 | Module snd-cs4231 | |
311 | ----------------- | |
312 | ||
313 | Module for sound cards based on CS4231 ISA chips. | |
314 | ||
315 | port - port # for CS4231 chip | |
316 | mpu_port - port # for MPU-401 UART (optional), -1 = disable | |
317 | irq - IRQ # for CS4231 chip | |
318 | mpu_irq - IRQ # for MPU-401 UART | |
319 | dma1 - first DMA # for CS4231 chip | |
320 | dma2 - second DMA # for CS4231 chip | |
321 | ||
322 | Module supports up to 8 cards. This module does not support autoprobe | |
323 | thus main port must be specified!!! Other ports are optional. | |
324 | ||
325 | The power-management is supported. | |
326 | ||
327 | Module snd-cs4232 | |
328 | ----------------- | |
329 | ||
330 | Module for sound cards based on CS4232/CS4232A ISA chips. | |
331 | ||
332 | port - port # for CS4232 chip (PnP setup - 0x534) | |
333 | cport - control port # for CS4232 chip (PnP setup - 0x120,0x210,0xf00) | |
334 | mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable | |
335 | fm_port - FM port # for CS4232 chip (PnP setup - 0x388), -1 = disable | |
336 | irq - IRQ # for CS4232 chip (5,7,9,11,12,15) | |
337 | mpu_irq - IRQ # for MPU-401 UART (9,11,12,15) | |
338 | dma1 - first DMA # for CS4232 chip (0,1,3) | |
339 | dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable | |
340 | isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) | |
341 | ||
342 | Module supports up to 8 cards. This module does not support autoprobe | |
343 | thus main port must be specified!!! Other ports are optional. | |
344 | ||
345 | The power-management is supported. | |
346 | ||
347 | Module snd-cs4236 | |
348 | ----------------- | |
349 | ||
350 | Module for sound cards based on CS4235/CS4236/CS4236B/CS4237B/ | |
351 | CS4238B/CS4239 ISA chips. | |
352 | ||
353 | port - port # for CS4236 chip (PnP setup - 0x534) | |
354 | cport - control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00) | |
355 | mpu_port - port # for MPU-401 UART (PnP setup - 0x300), -1 = disable | |
356 | fm_port - FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable | |
357 | irq - IRQ # for CS4236 chip (5,7,9,11,12,15) | |
358 | mpu_irq - IRQ # for MPU-401 UART (9,11,12,15) | |
359 | dma1 - first DMA # for CS4236 chip (0,1,3) | |
360 | dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable | |
361 | isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) | |
362 | ||
363 | Module supports up to 8 cards. This module does not support autoprobe | |
364 | (if ISA PnP is not used) thus main port and control port must be | |
365 | specified!!! Other ports are optional. | |
366 | ||
367 | The power-management is supported. | |
368 | ||
369 | Module snd-cs4281 | |
370 | ----------------- | |
371 | ||
372 | Module for Cirrus Logic CS4281 soundchip. | |
373 | ||
374 | dual_codec - Secondary codec ID (0 = disable, default) | |
375 | ||
376 | Module supports up to 8 cards. | |
377 | ||
378 | The power-management is supported. | |
379 | ||
380 | Module snd-cs46xx | |
381 | ----------------- | |
382 | ||
383 | Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/ | |
384 | CS4624/CS4630/CS4280 PCI chips. | |
385 | ||
386 | external_amp - Force to enable external amplifer. | |
387 | thinkpad - Force to enable Thinkpad's CLKRUN control. | |
388 | mmap_valid - Support OSS mmap mode (default = 0). | |
389 | ||
390 | Module supports up to 8 cards and autoprobe. | |
391 | Usually external amp and CLKRUN controls are detected automatically | |
392 | from PCI sub vendor/device ids. If they don't work, give the options | |
393 | above explicitly. | |
394 | ||
395 | The power-management is supported. | |
396 | ||
397 | Module snd-dt019x | |
398 | ----------------- | |
399 | ||
400 | Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnP | |
401 | only) | |
402 | ||
403 | port - Port # (PnP setup) | |
404 | mpu_port - Port # for MPU-401 (PnP setup) | |
405 | fm_port - Port # for FM OPL-3 (PnP setup) | |
406 | irq - IRQ # (PnP setup) | |
407 | mpu_irq - IRQ # for MPU-401 (PnP setup) | |
408 | dma8 - DMA # (PnP setup) | |
409 | ||
410 | Module supports up to 8 cards. This module is enabled only with | |
411 | ISA PnP support. | |
412 | ||
413 | Module snd-dummy | |
414 | ---------------- | |
415 | ||
416 | Module for the dummy sound card. This "card" doesn't do any output | |
417 | or input, but you may use this module for any application which | |
418 | requires a sound card (like RealPlayer). | |
419 | ||
420 | Module snd-emu10k1 | |
421 | ------------------ | |
422 | ||
423 | Module for EMU10K1/EMU10k2 based PCI sound cards. | |
424 | * Sound Blaster Live! | |
425 | * Sound Blaster PCI 512 | |
426 | * Emu APS (partially supported) | |
427 | * Sound Blaster Audigy | |
428 | ||
429 | extin - bitmap of available external inputs for FX8010 (see bellow) | |
430 | extout - bitmap of available external outputs for FX8010 (see bellow) | |
431 | seq_ports - allocated sequencer ports (4 by default) | |
432 | max_synth_voices - limit of voices used for wavetable (64 by default) | |
433 | max_buffer_size - specifies the maximum size of wavetable/pcm buffers | |
434 | given in MB unit. Default value is 128. | |
435 | enable_ir - enable IR | |
436 | ||
437 | Module supports up to 8 cards and autoprobe. | |
438 | ||
439 | Input & Output configurations [extin/extout] | |
440 | * Creative Card wo/Digital out [0x0003/0x1f03] | |
441 | * Creative Card w/Digital out [0x0003/0x1f0f] | |
442 | * Creative Card w/Digital CD in [0x000f/0x1f0f] | |
443 | * Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3] | |
444 | * Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf] | |
445 | * Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf] | |
446 | * Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f] | |
447 | * Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f] | |
448 | * Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f] | |
449 | * Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff] | |
450 | * Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff] | |
451 | * Creative Card all ins and outs [0x3fff/0x7fff] | |
452 | ||
453 | Module snd-emu10k1x | |
454 | ------------------- | |
455 | ||
456 | Module for Creative Emu10k1X (SB Live Dell OEM version) | |
457 | ||
458 | Module supports up to 8 cards. | |
459 | ||
460 | Module snd-ens1370 | |
461 | ------------------ | |
462 | ||
463 | Module for Ensoniq AudioPCI ES1370 PCI sound cards. | |
464 | * SoundBlaster PCI 64 | |
465 | * SoundBlaster PCI 128 | |
466 | ||
467 | joystick - Enable joystick (default off) | |
468 | ||
469 | Module supports up to 8 cards and autoprobe. | |
470 | ||
471 | Module snd-ens1371 | |
472 | ------------------ | |
473 | ||
474 | Module for Ensoniq AudioPCI ES1371 PCI sound cards. | |
475 | * SoundBlaster PCI 64 | |
476 | * SoundBlaster PCI 128 | |
477 | * SoundBlaster Vibra PCI | |
478 | ||
479 | joystick_port - port # for joystick (0x200,0x208,0x210,0x218), | |
480 | 0 = disable (default), 1 = auto-detect | |
481 | ||
482 | Module supports up to 8 cards and autoprobe. | |
483 | ||
484 | Module snd-es968 | |
485 | ---------------- | |
486 | ||
487 | Module for sound cards based on ESS ES968 chip (PnP only). | |
488 | ||
489 | port - port # for ES968 (SB8) chip (PnP setup) | |
490 | irq - IRQ # for ES968 (SB8) chip (PnP setup) | |
491 | dma1 - DMA # for ES968 (SB8) chip (PnP setup) | |
492 | ||
493 | Module supports up to 8 cards, PnP and autoprobe. | |
494 | ||
495 | Module snd-es1688 | |
496 | ----------------- | |
497 | ||
498 | Module for ESS AudioDrive ES-1688 and ES-688 sound cards. | |
499 | ||
500 | port - port # for ES-1688 chip (0x220,0x240,0x260) | |
501 | mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default) | |
502 | irq - IRQ # for ES-1688 chip (5,7,9,10) | |
503 | mpu_irq - IRQ # for MPU-401 port (5,7,9,10) | |
504 | dma8 - DMA # for ES-1688 chip (0,1,3) | |
505 | ||
506 | Module supports up to 8 cards and autoprobe (without MPU-401 port). | |
507 | ||
508 | Module snd-es18xx | |
509 | ----------------- | |
510 | ||
511 | Module for ESS AudioDrive ES-18xx sound cards. | |
512 | ||
513 | port - port # for ES-18xx chip (0x220,0x240,0x260) | |
514 | mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default) | |
515 | fm_port - port # for FM (optional, not used) | |
516 | irq - IRQ # for ES-18xx chip (5,7,9,10) | |
517 | dma1 - first DMA # for ES-18xx chip (0,1,3) | |
518 | dma2 - first DMA # for ES-18xx chip (0,1,3) | |
519 | isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) | |
520 | ||
521 | Module supports up to 8 cards ISA PnP and autoprobe (without MPU-401 port | |
522 | if native ISA PnP routines are not used). | |
523 | When dma2 is equal with dma1, the driver works as half-duplex. | |
524 | ||
525 | The power-management is supported. | |
526 | ||
527 | Module snd-es1938 | |
528 | ----------------- | |
529 | ||
530 | Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips. | |
531 | ||
532 | Module supports up to 8 cards and autoprobe. | |
533 | ||
534 | Module snd-es1968 | |
535 | ----------------- | |
536 | ||
537 | Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips. | |
538 | ||
539 | total_bufsize - total buffer size in kB (1-4096kB) | |
540 | pcm_substreams_p - playback channels (1-8, default=2) | |
541 | pcm_substreams_c - capture channels (1-8, default=0) | |
542 | clock - clock (0 = auto-detection) | |
543 | use_pm - support the power-management (0 = off, 1 = on, | |
544 | 2 = auto (default)) | |
545 | enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default)) | |
546 | joystick - enable joystick (default off) | |
547 | ||
548 | Module supports up to 8 cards and autoprobe. | |
549 | ||
550 | The power-management is supported. | |
551 | ||
552 | Module snd-fm801 | |
553 | ---------------- | |
554 | ||
555 | Module for ForteMedia FM801 based PCI sound cards. | |
556 | ||
557 | tea575x_tuner - Enable TEA575x tuner | |
558 | - 1 = MediaForte 256-PCS | |
559 | - 2 = MediaForte 256-PCPR | |
560 | - 3 = MediaForte 64-PCR | |
561 | - High 16-bits are video (radio) device number + 1 | |
562 | - example: 0x10002 (MediaForte 256-PCPR, device 1) | |
563 | ||
564 | Module supports up to 8 cards and autoprobe. | |
565 | ||
566 | Module snd-gusclassic | |
567 | --------------------- | |
568 | ||
569 | Module for Gravis UltraSound Classic sound card. | |
570 | ||
571 | port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260) | |
572 | irq - IRQ # for GF1 chip (3,5,9,11,12,15) | |
573 | dma1 - DMA # for GF1 chip (1,3,5,6,7) | |
574 | dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable) | |
575 | joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) | |
576 | voices - GF1 voices limit (14-32) | |
577 | pcm_voices - reserved PCM voices | |
578 | ||
579 | Module supports up to 8 cards and autoprobe. | |
580 | ||
581 | Module snd-gusextreme | |
582 | --------------------- | |
583 | ||
584 | Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card. | |
585 | ||
586 | port - port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260) | |
587 | gf1_port - port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270) | |
588 | mpu_port - port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable | |
589 | irq - IRQ # for ES-1688 chip (5,7,9,10) | |
590 | gf1_irq - IRQ # for GF1 chip (3,5,9,11,12,15) | |
591 | mpu_irq - IRQ # for MPU-401 port (5,7,9,10) | |
592 | dma8 - DMA # for ES-1688 chip (0,1,3) | |
593 | dma1 - DMA # for GF1 chip (1,3,5,6,7) | |
594 | joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) | |
595 | voices - GF1 voices limit (14-32) | |
596 | pcm_voices - reserved PCM voices | |
597 | ||
598 | Module supports up to 8 cards and autoprobe (without MPU-401 port). | |
599 | ||
600 | Module snd-gusmax | |
601 | ----------------- | |
602 | ||
603 | Module for Gravis UltraSound MAX sound card. | |
604 | ||
605 | port - port # for GF1 chip (0x220,0x230,0x240,0x250,0x260) | |
606 | irq - IRQ # for GF1 chip (3,5,9,11,12,15) | |
607 | dma1 - DMA # for GF1 chip (1,3,5,6,7) | |
608 | dma2 - DMA # for GF1 chip (1,3,5,6,7,-1=disable) | |
609 | joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) | |
610 | voices - GF1 voices limit (14-32) | |
611 | pcm_voices - reserved PCM voices | |
612 | ||
613 | Module supports up to 8 cards and autoprobe. | |
614 | ||
615 | Module snd-hda-intel | |
616 | -------------------- | |
617 | ||
fc20a562 TI |
618 | Module for Intel HD Audio (ICH6, ICH6M, ICH7), ATI SB450, |
619 | VIA VT8251/VT8237A | |
1da177e4 LT |
620 | |
621 | model - force the model name | |
c74db86b | 622 | position_fix - Fix DMA pointer (0 = FIFO size, 1 = none, 2 = POSBUF) |
1da177e4 LT |
623 | |
624 | Module supports up to 8 cards. | |
625 | ||
626 | Each codec may have a model table for different configurations. | |
627 | If your machine isn't listed there, the default (usually minimal) | |
628 | configuration is set up. You can pass "model=<name>" option to | |
629 | specify a certain model in such a case. There are different | |
630 | models depending on the codec chip. | |
631 | ||
632 | Model name Description | |
633 | ---------- ----------- | |
634 | ALC880 | |
635 | 3stack 3-jack in back and a headphone out | |
636 | 3stack-digout 3-jack in back, a HP out and a SPDIF out | |
637 | 5stack 5-jack in back, 2-jack in front | |
638 | 5stack-digout 5-jack in back, 2-jack in front, a SPDIF out | |
639 | w810 3-jack | |
dfc0ff62 | 640 | z71v 3-jack (HP shared SPDIF) |
1da177e4 LT |
641 | |
642 | CMI9880 | |
643 | minimal 3-jack in back | |
644 | min_fp 3-jack in back, 2-jack in front | |
645 | full 6-jack in back, 2-jack in front | |
646 | full_dig 6-jack in back, 2-jack in front, SPDIF I/O | |
647 | allout 5-jack in back, 2-jack in front, SPDIF out | |
648 | ||
c74db86b TI |
649 | Note 2: If you get click noises on output, try the module option |
650 | position_fix=1 or 2. position_fix=1 will use the SD_LPIB | |
651 | register value without FIFO size correction as the current | |
652 | DMA pointer. position_fix=2 will make the driver to use | |
653 | the position buffer instead of reading SD_LPIB register. | |
654 | (Usually SD_LPLIB register is more accurate than the | |
655 | position buffer.) | |
656 | ||
1da177e4 LT |
657 | Module snd-hdsp |
658 | --------------- | |
659 | ||
660 | Module for RME Hammerfall DSP audio interface(s) | |
661 | ||
662 | Module supports up to 8 cards. | |
663 | ||
664 | Note: The firmware data can be automatically loaded via hotplug | |
665 | when CONFIG_FW_LOADER is set. Otherwise, you need to load | |
666 | the firmware via hdsploader utility included in alsa-tools | |
667 | package. | |
668 | The firmware data is found in alsa-firmware package. | |
669 | ||
670 | Note: snd-page-alloc module does the job which snd-hammerfall-mem | |
671 | module did formerly. It will allocate the buffers in advance | |
672 | when any HDSP cards are found. To make the buffer | |
673 | allocation sure, load snd-page-alloc module in the early | |
b6a96915 TI |
674 | stage of boot sequence. See "Early Buffer Allocation" |
675 | section. | |
1da177e4 | 676 | |
5470440a TI |
677 | Module snd-hdspm |
678 | ---------------- | |
679 | ||
680 | Module for RME HDSP MADI board. | |
681 | ||
682 | precise_ptr - Enable precise pointer, or disable. | |
683 | line_outs_monitor - Send playback streams to analog outs by default. | |
684 | enable_monitor - Enable Analog Out on Channel 63/64 by default. | |
685 | ||
686 | See hdspm.txt for details. | |
687 | ||
1da177e4 LT |
688 | Module snd-ice1712 |
689 | ------------------ | |
690 | ||
691 | Module for Envy24 (ICE1712) based PCI sound cards. | |
692 | * MidiMan M Audio Delta 1010 | |
693 | * MidiMan M Audio Delta 1010LT | |
694 | * MidiMan M Audio Delta DiO 2496 | |
695 | * MidiMan M Audio Delta 66 | |
696 | * MidiMan M Audio Delta 44 | |
697 | * MidiMan M Audio Delta 410 | |
698 | * MidiMan M Audio Audiophile 2496 | |
699 | * TerraTec EWS 88MT | |
700 | * TerraTec EWS 88D | |
701 | * TerraTec EWX 24/96 | |
702 | * TerraTec DMX 6Fire | |
c9bce91f | 703 | * TerraTec Phase 88 |
1da177e4 LT |
704 | * Hoontech SoundTrack DSP 24 |
705 | * Hoontech SoundTrack DSP 24 Value | |
706 | * Hoontech SoundTrack DSP 24 Media 7.1 | |
c9bce91f | 707 | * Event Electronics, EZ8 |
1da177e4 | 708 | * Digigram VX442 |
c9bce91f | 709 | * Lionstracs, Mediastaton |
1da177e4 LT |
710 | |
711 | model - Use the given board model, one of the following: | |
712 | delta1010, dio2496, delta66, delta44, audiophile, delta410, | |
713 | delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d, | |
c9bce91f TI |
714 | dmx6fire, dsp24, dsp24_value, dsp24_71, ez8, |
715 | phase88, mediastation | |
1da177e4 LT |
716 | omni - Omni I/O support for MidiMan M-Audio Delta44/66 |
717 | cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever) | |
718 | in msec resolution, default value is 500 (0.5 sec) | |
719 | ||
720 | Module supports up to 8 cards and autoprobe. Note: The consumer part | |
721 | is not used with all Envy24 based cards (for example in the MidiMan Delta | |
722 | serie). | |
723 | ||
c9bce91f TI |
724 | Note: The supported board is detected by reading EEPROM or PCI |
725 | SSID (if EEPROM isn't available). You can override the | |
726 | model by passing "model" module option in case that the | |
727 | driver isn't configured properly or you want to try another | |
728 | type for testing. | |
729 | ||
1da177e4 LT |
730 | Module snd-ice1724 |
731 | ------------------ | |
732 | ||
c9bce91f | 733 | Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards. |
1da177e4 LT |
734 | * MidiMan M Audio Revolution 7.1 |
735 | * AMP Ltd AUDIO2000 | |
c9bce91f TI |
736 | * TerraTec Aureon 5.1 Sky |
737 | * TerraTec Aureon 7.1 Space | |
738 | * TerraTec Aureon 7.1 Universe | |
739 | * TerraTec Phase 22 | |
740 | * TerraTec Phase 28 | |
741 | * AudioTrak Prodigy 7.1 | |
742 | * AudioTrak Prodigy 192 | |
743 | * Pontis MS300 | |
744 | * Albatron K8X800 Pro II | |
745 | * Chaintech ZNF3-150 | |
746 | * Chaintech ZNF3-250 | |
747 | * Chaintech 9CJS | |
8cfbbac6 | 748 | * Chaintech AV-710 |
c9bce91f | 749 | * Shuttle SN25P |
1da177e4 LT |
750 | |
751 | model - Use the given board model, one of the following: | |
c9bce91f | 752 | revo71, amp2000, prodigy71, prodigy192, aureon51, |
8cfbbac6 TI |
753 | aureon71, universe, k8x800, phase22, phase28, ms300, |
754 | av710 | |
1da177e4 LT |
755 | |
756 | Module supports up to 8 cards and autoprobe. | |
757 | ||
c9bce91f TI |
758 | Note: The supported board is detected by reading EEPROM or PCI |
759 | SSID (if EEPROM isn't available). You can override the | |
760 | model by passing "model" module option in case that the | |
761 | driver isn't configured properly or you want to try another | |
762 | type for testing. | |
763 | ||
1da177e4 LT |
764 | Module snd-intel8x0 |
765 | ------------------- | |
766 | ||
767 | Module for AC'97 motherboards from Intel and compatibles. | |
768 | * Intel i810/810E, i815, i820, i830, i84x, MX440 | |
769 | * SiS 7012 (SiS 735) | |
770 | * NVidia NForce, NForce2 | |
771 | * AMD AMD768, AMD8111 | |
772 | * ALi m5455 | |
773 | ||
774 | ac97_clock - AC'97 codec clock base (0 = auto-detect) | |
775 | ac97_quirk - AC'97 workaround for strange hardware | |
776 | The following strings are accepted: | |
777 | default = don't override the default setting | |
778 | disable = disable the quirk | |
779 | hp_only = use headphone control as master | |
780 | swap_hp = swap headphone and master controls | |
781 | swap_surround = swap master and surround controls | |
782 | ad_sharing = for AD1985, turn on OMS bit and use headphone | |
783 | alc_jack = for ALC65x, turn on the jack sense mode | |
784 | inv_eapd = inverted EAPD implementation | |
785 | mute_led = bind EAPD bit for turning on/off mute LED | |
786 | For backward compatibility, the corresponding integer | |
787 | value -1, 0, ... are accepted, too. | |
788 | buggy_irq - Enable workaround for buggy interrupts on some | |
789 | motherboards (default off) | |
790 | ||
791 | Module supports autoprobe and multiple bus-master chips (max 8). | |
792 | ||
793 | Note: the latest driver supports auto-detection of chip clock. | |
794 | if you still encounter too fast playback, specify the clock | |
795 | explicitly via the module option "ac97_clock=41194". | |
796 | ||
797 | Joystick/MIDI ports are not supported by this driver. If your | |
798 | motherboard has these devices, use the ns558 or snd-mpu401 | |
799 | modules, respectively. | |
800 | ||
801 | The ac97_quirk option is used to enable/override the workaround | |
802 | for specific devices. Some hardware have swapped output pins | |
803 | between Master and Headphone, or Surround. The driver provides | |
804 | the auto-detection of known problematic devices, but some might | |
805 | be unknown or wrongly detected. In such a case, pass the proper | |
806 | value with this option. | |
807 | ||
808 | The power-management is supported. | |
809 | ||
810 | Module snd-intel8x0m | |
811 | -------------------- | |
812 | ||
813 | Module for Intel ICH (i8x0) chipset MC97 modems. | |
814 | ||
815 | ac97_clock - AC'97 codec clock base (0 = auto-detect) | |
816 | ||
817 | This module supports up to 8 cards and autoprobe. | |
818 | ||
819 | Note: The default index value of this module is -2, i.e. the first | |
820 | slot is excluded. | |
821 | ||
822 | Module snd-interwave | |
823 | -------------------- | |
824 | ||
825 | Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32 | |
826 | and other sound cards based on AMD InterWave (tm) chip. | |
827 | ||
828 | port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260) | |
829 | irq - IRQ # for InterWave chip (3,5,9,11,12,15) | |
830 | dma1 - DMA # for InterWave chip (0,1,3,5,6,7) | |
831 | dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable) | |
832 | joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) | |
833 | midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default) | |
834 | pcm_voices - reserved PCM voices for the synthesizer (default 2) | |
835 | effect - 1 = InterWave effects enable (default 0); | |
836 | requires 8 voices | |
837 | ||
838 | Module supports up to 8 cards, autoprobe and ISA PnP. | |
839 | ||
840 | Module snd-interwave-stb | |
841 | ------------------------ | |
842 | ||
843 | Module for UltraSound 32-Pro (sound card from STB used by Compaq) | |
844 | and other sound cards based on AMD InterWave (tm) chip with TEA6330T | |
845 | circuit for extended control of bass, treble and master volume. | |
846 | ||
847 | port - port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260) | |
848 | port_tc - tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380) | |
849 | irq - IRQ # for InterWave chip (3,5,9,11,12,15) | |
850 | dma1 - DMA # for InterWave chip (0,1,3,5,6,7) | |
851 | dma2 - DMA # for InterWave chip (0,1,3,5,6,7,-1=disable) | |
852 | joystick_dac - 0 to 31, (0.59V-4.52V or 0.389V-2.98V) | |
853 | midi - 1 = MIDI UART enable, 0 = MIDI UART disable (default) | |
854 | pcm_voices - reserved PCM voices for the synthesizer (default 2) | |
855 | effect - 1 = InterWave effects enable (default 0); | |
856 | requires 8 voices | |
857 | ||
858 | Module supports up to 8 cards, autoprobe and ISA PnP. | |
859 | ||
860 | Module snd-korg1212 | |
861 | ------------------- | |
862 | ||
863 | Module for Korg 1212 IO PCI card | |
864 | ||
865 | Module supports up to 8 cards. | |
866 | ||
867 | Module snd-maestro3 | |
868 | ------------------- | |
869 | ||
870 | Module for Allegro/Maestro3 chips | |
871 | ||
872 | external_amp - enable external amp (enabled by default) | |
873 | amp_gpio - GPIO pin number for external amp (0-15) or | |
874 | -1 for default pin (8 for allegro, 1 for | |
875 | others) | |
876 | ||
877 | Module supports autoprobe and multiple chips (max 8). | |
878 | ||
879 | Note: the binding of amplifier is dependent on hardware. | |
880 | If there is no sound even though all channels are unmuted, try to | |
881 | specify other gpio connection via amp_gpio option. | |
882 | For example, a Panasonic notebook might need "amp_gpio=0x0d" | |
883 | option. | |
884 | ||
885 | The power-management is supported. | |
886 | ||
887 | Module snd-mixart | |
888 | ----------------- | |
889 | ||
890 | Module for Digigram miXart8 sound cards. | |
891 | ||
892 | Module supports multiple cards. | |
893 | Note: One miXart8 board will be represented as 4 alsa cards. | |
894 | See MIXART.txt for details. | |
895 | ||
896 | When the driver is compiled as a module and the hotplug firmware | |
897 | is supported, the firmware data is loaded via hotplug automatically. | |
898 | Install the necessary firmware files in alsa-firmware package. | |
899 | When no hotplug fw loader is available, you need to load the | |
900 | firmware via mixartloader utility in alsa-tools package. | |
901 | ||
902 | Module snd-mpu401 | |
903 | ----------------- | |
904 | ||
905 | Module for MPU-401 UART devices. | |
906 | ||
907 | port - port number or -1 (disable) | |
908 | irq - IRQ number or -1 (disable) | |
909 | pnp - PnP detection - 0 = disable, 1 = enable (default) | |
910 | ||
911 | Module supports multiple devices (max 8) and PnP. | |
912 | ||
913 | Module snd-mtpav | |
914 | ---------------- | |
915 | ||
916 | Module for MOTU MidiTimePiece AV multiport MIDI (on the parallel | |
917 | port). | |
918 | ||
919 | port - I/O port # for MTPAV (0x378,0x278, default=0x378) | |
920 | irq - IRQ # for MTPAV (7,5, default=7) | |
921 | hwports - number of supported hardware ports, default=8. | |
922 | ||
923 | Module supports only 1 card. This module has no enable option. | |
924 | ||
925 | Module snd-nm256 | |
926 | ---------------- | |
927 | ||
928 | Module for NeoMagic NM256AV/ZX chips | |
929 | ||
930 | playback_bufsize - max playback frame size in kB (4-128kB) | |
931 | capture_bufsize - max capture frame size in kB (4-128kB) | |
932 | force_ac97 - 0 or 1 (disabled by default) | |
933 | buffer_top - specify buffer top address | |
934 | use_cache - 0 or 1 (disabled by default) | |
935 | vaio_hack - alias buffer_top=0x25a800 | |
936 | reset_workaround - enable AC97 RESET workaround for some laptops | |
937 | ||
938 | Module supports autoprobe and multiple chips (max 8). | |
939 | ||
940 | The power-management is supported. | |
941 | ||
942 | Note: on some notebooks the buffer address cannot be detected | |
943 | automatically, or causes hang-up during initialization. | |
944 | In such a case, specify the buffer top address explicity via | |
945 | buffer_top option. | |
946 | For example, | |
947 | Sony F250: buffer_top=0x25a800 | |
948 | Sony F270: buffer_top=0x272800 | |
949 | The driver supports only ac97 codec. It's possible to force | |
950 | to initialize/use ac97 although it's not detected. In such a | |
951 | case, use force_ac97=1 option - but *NO* guarantee whether it | |
952 | works! | |
953 | ||
954 | Note: The NM256 chip can be linked internally with non-AC97 | |
955 | codecs. This driver supports only the AC97 codec, and won't work | |
956 | with machines with other (most likely CS423x or OPL3SAx) chips, | |
957 | even though the device is detected in lspci. In such a case, try | |
958 | other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP | |
959 | but some doesn't have ISA PnP. You'll need to speicfy isapnp=0 | |
960 | and proper hardware parameters in the case without ISA PnP. | |
961 | ||
962 | Note: some laptops need a workaround for AC97 RESET. For the | |
963 | known hardware like Dell Latitude LS and Sony PCG-F305, this | |
964 | workaround is enabled automatically. For other laptops with a | |
965 | hard freeze, you can try reset_workaround=1 option. | |
966 | ||
967 | Note: This driver is really crappy. It's a porting from the | |
968 | OSS driver, which is a result of black-magic reverse engineering. | |
969 | The detection of codec will fail if the driver is loaded *after* | |
970 | X-server as described above. You might be able to force to load | |
971 | the module, but it may result in hang-up. Hence, make sure that | |
972 | you load this module *before* X if you encounter this kind of | |
973 | problem. | |
974 | ||
975 | Module snd-opl3sa2 | |
976 | ------------------ | |
977 | ||
978 | Module for Yamaha OPL3-SA2/SA3 sound cards. | |
979 | ||
980 | port - control port # for OPL3-SA chip (0x370) | |
981 | sb_port - SB port # for OPL3-SA chip (0x220,0x240) | |
982 | wss_port - WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604) | |
983 | midi_port - port # for MPU-401 UART (0x300,0x330), -1 = disable | |
984 | fm_port - FM port # for OPL3-SA chip (0x388), -1 = disable | |
985 | irq - IRQ # for OPL3-SA chip (5,7,9,10) | |
986 | dma1 - first DMA # for Yamaha OPL3-SA chip (0,1,3) | |
987 | dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable | |
988 | isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) | |
989 | ||
990 | Module supports up to 8 cards and ISA PnP. This module does not support | |
991 | autoprobe (if ISA PnP is not used) thus all ports must be specified!!! | |
992 | ||
993 | The power-management is supported. | |
994 | ||
995 | Module snd-opti92x-ad1848 | |
996 | ------------------------- | |
997 | ||
998 | Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips. | |
999 | Module works with OAK Mozart cards as well. | |
1000 | ||
1001 | port - port # for WSS chip (0x530,0xe80,0xf40,0x604) | |
1002 | mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) | |
1003 | fm_port - port # for OPL3 device (0x388) | |
1004 | irq - IRQ # for WSS chip (5,7,9,10,11) | |
1005 | mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) | |
1006 | dma1 - first DMA # for WSS chip (0,1,3) | |
1007 | ||
1008 | This module supports only one card, autoprobe and PnP. | |
1009 | ||
1010 | Module snd-opti92x-cs4231 | |
1011 | ------------------------- | |
1012 | ||
1013 | Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips. | |
1014 | ||
1015 | port - port # for WSS chip (0x530,0xe80,0xf40,0x604) | |
1016 | mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) | |
1017 | fm_port - port # for OPL3 device (0x388) | |
1018 | irq - IRQ # for WSS chip (5,7,9,10,11) | |
1019 | mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) | |
1020 | dma1 - first DMA # for WSS chip (0,1,3) | |
1021 | dma2 - second DMA # for WSS chip (0,1,3) | |
1022 | ||
1023 | This module supports only one card, autoprobe and PnP. | |
1024 | ||
1025 | Module snd-opti93x | |
1026 | ------------------ | |
1027 | ||
1028 | Module for sound cards based on OPTi 82c93x chips. | |
1029 | ||
1030 | port - port # for WSS chip (0x530,0xe80,0xf40,0x604) | |
1031 | mpu_port - port # for MPU-401 UART (0x300,0x310,0x320,0x330) | |
1032 | fm_port - port # for OPL3 device (0x388) | |
1033 | irq - IRQ # for WSS chip (5,7,9,10,11) | |
1034 | mpu_irq - IRQ # for MPU-401 UART (5,7,9,10) | |
1035 | dma1 - first DMA # for WSS chip (0,1,3) | |
1036 | dma2 - second DMA # for WSS chip (0,1,3) | |
1037 | ||
1038 | This module supports only one card, autoprobe and PnP. | |
1039 | ||
1040 | Module snd-powermac (on ppc only) | |
1041 | --------------------------------- | |
1042 | ||
1043 | Module for PowerMac, iMac and iBook on-board soundchips | |
1044 | ||
1045 | enable_beep - enable beep using PCM (enabled as default) | |
1046 | ||
1047 | Module supports autoprobe a chip. | |
1048 | ||
1049 | Note: the driver may have problems regarding endianess. | |
1050 | ||
1051 | The power-management is supported. | |
1052 | ||
1053 | Module snd-rme32 | |
1054 | ---------------- | |
1055 | ||
1056 | Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32, | |
1057 | Prodif96 and Prodif Gold) sound cards. | |
1058 | ||
1059 | Module supports up to 8 cards. | |
1060 | ||
1061 | Module snd-rme96 | |
1062 | ---------------- | |
1063 | ||
1064 | Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards. | |
1065 | ||
1066 | Module supports up to 8 cards. | |
1067 | ||
1068 | Module snd-rme9652 | |
1069 | ------------------ | |
1070 | ||
1071 | Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards. | |
1072 | ||
1073 | precise_ptr - Enable precise pointer (doesn't work reliably). | |
1074 | (default = 0) | |
1075 | ||
1076 | Module supports up to 8 cards. | |
1077 | ||
1078 | Note: snd-page-alloc module does the job which snd-hammerfall-mem | |
1079 | module did formerly. It will allocate the buffers in advance | |
1080 | when any RME9652 cards are found. To make the buffer | |
1081 | allocation sure, load snd-page-alloc module in the early | |
b6a96915 TI |
1082 | stage of boot sequence. See "Early Buffer Allocation" |
1083 | section. | |
1da177e4 LT |
1084 | |
1085 | Module snd-sa11xx-uda1341 (on arm only) | |
1086 | --------------------------------------- | |
1087 | ||
1088 | Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card. | |
1089 | ||
1090 | Module supports only one card. | |
1091 | Module has no enable and index options. | |
1092 | ||
1093 | Module snd-sb8 | |
1094 | -------------- | |
1095 | ||
1096 | Module for 8-bit SoundBlaster cards: SoundBlaster 1.0, | |
1097 | SoundBlaster 2.0, | |
1098 | SoundBlaster Pro | |
1099 | ||
1100 | port - port # for SB DSP chip (0x220,0x240,0x260) | |
1101 | irq - IRQ # for SB DSP chip (5,7,9,10) | |
1102 | dma8 - DMA # for SB DSP chip (1,3) | |
1103 | ||
1104 | Module supports up to 8 cards and autoprobe. | |
1105 | ||
1106 | Module snd-sb16 and snd-sbawe | |
1107 | ----------------------------- | |
1108 | ||
1109 | Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP), | |
1110 | SoundBlaster AWE 32 (PnP), | |
1111 | SoundBlaster AWE 64 PnP | |
1112 | ||
1113 | port - port # for SB DSP 4.x chip (0x220,0x240,0x260) | |
1114 | mpu_port - port # for MPU-401 UART (0x300,0x330), -1 = disable | |
1115 | awe_port - base port # for EMU8000 synthesizer (0x620,0x640,0x660) | |
1116 | (snd-sbawe module only) | |
1117 | irq - IRQ # for SB DSP 4.x chip (5,7,9,10) | |
1118 | dma8 - 8-bit DMA # for SB DSP 4.x chip (0,1,3) | |
1119 | dma16 - 16-bit DMA # for SB DSP 4.x chip (5,6,7) | |
1120 | mic_agc - Mic Auto-Gain-Control - 0 = disable, 1 = enable (default) | |
1121 | csp - ASP/CSP chip support - 0 = disable (default), 1 = enable | |
1122 | isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) | |
1123 | ||
1124 | Module supports up to 8 cards, autoprobe and ISA PnP. | |
1125 | ||
1126 | Note: To use Vibra16X cards in 16-bit half duplex mode, you must | |
1127 | disable 16bit DMA with dma16 = -1 module parameter. | |
1128 | Also, all Sound Blaster 16 type cards can operate in 16-bit | |
1129 | half duplex mode through 8-bit DMA channel by disabling their | |
1130 | 16-bit DMA channel. | |
1131 | ||
1132 | Module snd-sgalaxy | |
1133 | ------------------ | |
1134 | ||
1135 | Module for Aztech Sound Galaxy sound card. | |
1136 | ||
1137 | sbport - Port # for SB16 interface (0x220,0x240) | |
1138 | wssport - Port # for WSS interface (0x530,0xe80,0xf40,0x604) | |
1139 | irq - IRQ # (7,9,10,11) | |
1140 | dma1 - DMA # | |
1141 | ||
1142 | Module supports up to 8 cards. | |
1143 | ||
1144 | Module snd-sscape | |
1145 | ----------------- | |
1146 | ||
1147 | Module for ENSONIQ SoundScape PnP cards. | |
1148 | ||
1149 | port - Port # (PnP setup) | |
1150 | irq - IRQ # (PnP setup) | |
1151 | mpu_irq - MPU-401 IRQ # (PnP setup) | |
1152 | dma - DMA # (PnP setup) | |
1153 | ||
1154 | Module supports up to 8 cards. ISA PnP must be enabled. | |
1155 | You need sscape_ctl tool in alsa-tools package for loading | |
1156 | the microcode. | |
1157 | ||
1158 | Module snd-sun-amd7930 (on sparc only) | |
1159 | -------------------------------------- | |
1160 | ||
1161 | Module for AMD7930 sound chips found on Sparcs. | |
1162 | ||
1163 | Module supports up to 8 cards. | |
1164 | ||
1165 | Module snd-sun-cs4231 (on sparc only) | |
1166 | ------------------------------------- | |
1167 | ||
1168 | Module for CS4231 sound chips found on Sparcs. | |
1169 | ||
1170 | Module supports up to 8 cards. | |
1171 | ||
1172 | Module snd-wavefront | |
1173 | -------------------- | |
1174 | ||
1175 | Module for Turtle Beach Maui, Tropez and Tropez+ sound cards. | |
1176 | ||
1177 | cs4232_pcm_port - Port # for CS4232 PCM interface. | |
1178 | cs4232_pcm_irq - IRQ # for CS4232 PCM interface (5,7,9,11,12,15). | |
1179 | cs4232_mpu_port - Port # for CS4232 MPU-401 interface. | |
1180 | cs4232_mpu_irq - IRQ # for CS4232 MPU-401 interface (9,11,12,15). | |
1181 | use_cs4232_midi - Use CS4232 MPU-401 interface | |
1182 | (inaccessibly located inside your computer) | |
1183 | ics2115_port - Port # for ICS2115 | |
1184 | ics2115_irq - IRQ # for ICS2115 | |
1185 | fm_port - FM OPL-3 Port # | |
1186 | dma1 - DMA1 # for CS4232 PCM interface. | |
1187 | dma2 - DMA2 # for CS4232 PCM interface. | |
1188 | isapnp - ISA PnP detection - 0 = disable, 1 = enable (default) | |
1189 | ||
1190 | Module supports up to 8 cards and ISA PnP. | |
1191 | ||
1192 | Module snd-sonicvibes | |
1193 | --------------------- | |
1194 | ||
1195 | Module for S3 SonicVibes PCI sound cards. | |
1196 | * PINE Schubert 32 PCI | |
1197 | ||
1198 | reverb - Reverb Enable - 1 = enable, 0 = disable (default) | |
1199 | - SoundCard must have onboard SRAM for this. | |
1200 | mge - Mic Gain Enable - 1 = enable, 0 = disable (default) | |
1201 | ||
1202 | Module supports up to 8 cards and autoprobe. | |
1203 | ||
1204 | Module snd-serial-u16550 | |
1205 | ------------------------ | |
1206 | ||
1207 | Module for UART16550A serial MIDI ports. | |
1208 | ||
1209 | port - port # for UART16550A chip | |
1210 | irq - IRQ # for UART16550A chip, -1 = poll mode | |
1211 | speed - speed in bauds (9600,19200,38400,57600,115200) | |
1212 | 38400 = default | |
1213 | base - base for divisor in bauds (57600,115200,230400,460800) | |
1214 | 115200 = default | |
1215 | outs - number of MIDI ports in a serial port (1-4) | |
1216 | 1 = default | |
1217 | adaptor - Type of adaptor. | |
1218 | 0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A, | |
1219 | 3 = MS-124W M/B, 4 = Generic | |
1220 | ||
1221 | Module supports up to 8 cards. This module does not support autoprobe | |
1222 | thus the main port must be specified!!! Other options are optional. | |
1223 | ||
1224 | Module snd-trident | |
1225 | ------------------ | |
1226 | ||
1227 | Module for Trident 4DWave DX/NX sound cards. | |
1228 | * Best Union Miss Melody 4DWave PCI | |
1229 | * HIS 4DWave PCI | |
1230 | * Warpspeed ONSpeed 4DWave PCI | |
1231 | * AzTech PCI 64-Q3D | |
1232 | * Addonics SV 750 | |
1233 | * CHIC True Sound 4Dwave | |
1234 | * Shark Predator4D-PCI | |
1235 | * Jaton SonicWave 4D | |
1236 | ||
1237 | pcm_channels - max channels (voices) reserved for PCM | |
1238 | wavetable_size - max wavetable size in kB (4-?kb) | |
1239 | ||
1240 | Module supports up to 8 cards and autoprobe. | |
1241 | ||
1242 | The power-management is supported. | |
1243 | ||
1244 | Module snd-usb-audio | |
1245 | -------------------- | |
1246 | ||
1247 | Module for USB audio and USB MIDI devices. | |
1248 | ||
1249 | vid - Vendor ID for the device (optional) | |
1250 | pid - Product ID for the device (optional) | |
1251 | ||
1252 | This module supports up to 8 cards, autoprobe and hotplugging. | |
1253 | ||
1254 | Module snd-usb-usx2y | |
1255 | -------------------- | |
1256 | ||
1257 | Module for Tascam USB US-122, US-224 and US-428 devices. | |
1258 | ||
1259 | This module supports up to 8 cards, autoprobe and hotplugging. | |
1260 | ||
1261 | Note: you need to load the firmware via usx2yloader utility included | |
1262 | in alsa-tools and alsa-firmware packages. | |
1263 | ||
1264 | Module snd-via82xx | |
1265 | ------------------ | |
1266 | ||
1267 | Module for AC'97 motherboards based on VIA 82C686A/686B, 8233, | |
2d7eb7cb | 1268 | 8233A, 8233C, 8235, 8237 (south) bridge. |
1da177e4 LT |
1269 | |
1270 | mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup | |
1271 | [VIA686A/686B only] | |
1272 | joystick - Enable joystick (default off) [VIA686A/686B only] | |
1273 | ac97_clock - AC'97 codec clock base (default 48000Hz) | |
1274 | dxs_support - support DXS channels, | |
2d7eb7cb SV |
1275 | 0 = auto (default), 1 = enable, 2 = disable, |
1276 | 3 = 48k only, 4 = no VRA, 5 = enable any sample | |
1277 | rate and different sample rates on different | |
1278 | channels | |
1279 | [VIA8233/C, 8235, 8237 only] | |
1da177e4 LT |
1280 | ac97_quirk - AC'97 workaround for strange hardware |
1281 | See the description of intel8x0 module for details. | |
1282 | ||
1283 | Module supports autoprobe and multiple bus-master chips (max 8). | |
1284 | ||
1285 | Note: on some SMP motherboards like MSI 694D the interrupts might | |
1286 | not be generated properly. In such a case, please try to | |
1287 | set the SMP (or MPS) version on BIOS to 1.1 instead of | |
1288 | default value 1.4. Then the interrupt number will be | |
1289 | assigned under 15. You might also upgrade your BIOS. | |
1290 | ||
2d7eb7cb | 1291 | Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound) |
1da177e4 | 1292 | channels as the first PCM. On these channels, up to 4 |
2d7eb7cb SV |
1293 | streams can be played at the same time, and the controller |
1294 | can perform sample rate conversion with separate rates for | |
1295 | each channel. | |
1da177e4 LT |
1296 | As default (dxs_support = 0), 48k fixed rate is chosen |
1297 | except for the known devices since the output is often | |
1298 | noisy except for 48k on some mother boards due to the | |
1299 | bug of BIOS. | |
2d7eb7cb | 1300 | Please try once dxs_support=5 and if it works on other |
1da177e4 LT |
1301 | sample rates (e.g. 44.1kHz of mp3 playback), please let us |
1302 | know the PCI subsystem vendor/device id's (output of | |
1303 | "lspci -nv"). | |
cdc27f3a TI |
1304 | If dxs_support=5 does not work, try dxs_support=4; if it |
1305 | doesn't work too, try dxs_support=1. (dxs_support=1 is | |
1306 | usually for old motherboards. The correct implementated | |
1307 | board should work with 4 or 5.) If it still doesn't | |
1da177e4 LT |
1308 | work and the default setting is ok, dxs_support=3 is the |
1309 | right choice. If the default setting doesn't work at all, | |
1310 | try dxs_support=2 to disable the DXS channels. | |
1311 | In any cases, please let us know the result and the | |
1312 | subsystem vendor/device ids. | |
1313 | ||
1314 | Note: for the MPU401 on VIA823x, use snd-mpu401 driver | |
1315 | additonally. The mpu_port option is for VIA686 chips only. | |
1316 | ||
1317 | Module snd-via82xx-modem | |
1318 | ------------------------ | |
1319 | ||
1320 | Module for VIA82xx AC97 modem | |
1321 | ||
1322 | ac97_clock - AC'97 codec clock base (default 48000Hz) | |
1323 | ||
1324 | Module supports up to 8 cards. | |
1325 | ||
1326 | Note: The default index value of this module is -2, i.e. the first | |
1327 | slot is excluded. | |
1328 | ||
1329 | Module snd-virmidi | |
1330 | ------------------ | |
1331 | ||
1332 | Module for virtual rawmidi devices. | |
1333 | This module creates virtual rawmidi devices which communicate | |
1334 | to the corresponding ALSA sequencer ports. | |
1335 | ||
1336 | midi_devs - MIDI devices # (1-8, default=4) | |
1337 | ||
1338 | Module supports up to 8 cards. | |
1339 | ||
1340 | Module snd-vx222 | |
1341 | ---------------- | |
1342 | ||
1343 | Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards. | |
1344 | ||
1345 | mic - Enable Microphone on V222 Mic (NYI) | |
1346 | ibl - Capture IBL size. (default = 0, minimum size) | |
1347 | ||
1348 | Module supports up to 8 cards. | |
1349 | ||
1350 | When the driver is compiled as a module and the hotplug firmware | |
1351 | is supported, the firmware data is loaded via hotplug automatically. | |
1352 | Install the necessary firmware files in alsa-firmware package. | |
1353 | When no hotplug fw loader is available, you need to load the | |
1354 | firmware via vxloader utility in alsa-tools package. To invoke | |
1355 | vxloader automatically, add the following to /etc/modprobe.conf | |
1356 | ||
1357 | install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader | |
1358 | ||
1359 | (for 2.2/2.4 kernels, add "post-install /usr/bin/vxloader" to | |
1360 | /etc/modules.conf, instead.) | |
1361 | IBL size defines the interrupts period for PCM. The smaller size | |
1362 | gives smaller latency but leads to more CPU consumption, too. | |
1363 | The size is usually aligned to 126. As default (=0), the smallest | |
1364 | size is chosen. The possible IBL values can be found in | |
1365 | /proc/asound/cardX/vx-status proc file. | |
1366 | ||
1367 | Module snd-vxpocket | |
1368 | ------------------- | |
1369 | ||
1370 | Module for Digigram VX-Pocket VX2 PCMCIA card. | |
1371 | ||
1372 | ibl - Capture IBL size. (default = 0, minimum size) | |
1373 | ||
1374 | Module supports up to 8 cards. The module is compiled only when | |
1375 | PCMCIA is supported on kernel. | |
1376 | ||
1377 | To activate the driver via the card manager, you'll need to set | |
1378 | up /etc/pcmcia/vxpocket.conf. See the sound/pcmcia/vx/vxpocket.c. | |
1379 | ||
1380 | When the driver is compiled as a module and the hotplug firmware | |
1381 | is supported, the firmware data is loaded via hotplug automatically. | |
1382 | Install the necessary firmware files in alsa-firmware package. | |
1383 | When no hotplug fw loader is available, you need to load the | |
1384 | firmware via vxloader utility in alsa-tools package. | |
1385 | ||
1386 | About capture IBL, see the description of snd-vx222 module. | |
1387 | ||
1388 | Note: the driver is build only when CONFIG_ISA is set. | |
1389 | ||
1390 | Module snd-vxp440 | |
1391 | ----------------- | |
1392 | ||
1393 | Module for Digigram VX-Pocket 440 PCMCIA card. | |
1394 | ||
1395 | ibl - Capture IBL size. (default = 0, minimum size) | |
1396 | ||
1397 | Module supports up to 8 cards. The module is compiled only when | |
1398 | PCMCIA is supported on kernel. | |
1399 | ||
1400 | To activate the driver via the card manager, you'll need to set | |
1401 | up /etc/pcmcia/vxp440.conf. See the sound/pcmcia/vx/vxp440.c. | |
1402 | ||
1403 | When the driver is compiled as a module and the hotplug firmware | |
1404 | is supported, the firmware data is loaded via hotplug automatically. | |
1405 | Install the necessary firmware files in alsa-firmware package. | |
1406 | When no hotplug fw loader is available, you need to load the | |
1407 | firmware via vxloader utility in alsa-tools package. | |
1408 | ||
1409 | About capture IBL, see the description of snd-vx222 module. | |
1410 | ||
1411 | Note: the driver is build only when CONFIG_ISA is set. | |
1412 | ||
1413 | Module snd-ymfpci | |
1414 | ----------------- | |
1415 | ||
1416 | Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x). | |
1417 | ||
1418 | mpu_port - 0x300,0x330,0x332,0x334, 0 (disable) by default, | |
1419 | 1 (auto-detect for YMF744/754 only) | |
1420 | fm_port - 0x388,0x398,0x3a0,0x3a8, 0 (disable) by default | |
1421 | 1 (auto-detect for YMF744/754 only) | |
1422 | joystick_port - 0x201,0x202,0x204,0x205, 0 (disable) by default, | |
1423 | 1 (auto-detect) | |
1424 | rear_switch - enable shared rear/line-in switch (bool) | |
1425 | ||
1426 | Module supports autoprobe and multiple chips (max 8). | |
1427 | ||
1428 | The power-management is supported. | |
1429 | ||
1430 | Module snd-pdaudiocf | |
1431 | -------------------- | |
1432 | ||
1433 | Module for Sound Core PDAudioCF sound card. | |
1434 | ||
1435 | Note: the driver is build only when CONFIG_ISA is set. | |
1436 | ||
1437 | ||
1438 | Configuring Non-ISAPNP Cards | |
1439 | ============================ | |
1440 | ||
1441 | When the kernel is configured with ISA-PnP support, the modules | |
1442 | supporting the isapnp cards will have module options "isapnp". | |
1443 | If this option is set, *only* the ISA-PnP devices will be probed. | |
1444 | For probing the non ISA-PnP cards, you have to pass "isapnp=0" option | |
1445 | together with the proper i/o and irq configuration. | |
1446 | ||
1447 | When the kernel is configured without ISA-PnP support, isapnp option | |
1448 | will be not built in. | |
1449 | ||
1450 | ||
1451 | Module Autoloading Support | |
1452 | ========================== | |
1453 | ||
1454 | The ALSA drivers can be loaded automatically on demand by defining | |
1455 | module aliases. The string 'snd-card-%1' is requested for ALSA native | |
1456 | devices where %i is sound card number from zero to seven. | |
1457 | ||
1458 | To auto-load an ALSA driver for OSS services, define the string | |
1459 | 'sound-slot-%i' where %i means the slot number for OSS, which | |
1460 | corresponds to the card index of ALSA. Usually, define this | |
1461 | as the the same card module. | |
1462 | ||
1463 | An example configuration for a single emu10k1 card is like below: | |
1464 | ----- /etc/modprobe.conf | |
1465 | alias snd-card-0 snd-emu10k1 | |
1466 | alias sound-slot-0 snd-emu10k1 | |
1467 | ----- /etc/modprobe.conf | |
1468 | ||
1469 | The available number of auto-loaded sound cards depends on the module | |
1470 | option "cards_limit" of snd module. As default it's set to 1. | |
1471 | To enable the auto-loading of multiple cards, specify the number of | |
1472 | sound cards in that option. | |
1473 | ||
1474 | When multiple cards are available, it'd better to specify the index | |
1475 | number for each card via module option, too, so that the order of | |
1476 | cards is kept consistent. | |
1477 | ||
1478 | An example configuration for two sound cards is like below: | |
1479 | ||
1480 | ----- /etc/modprobe.conf | |
1481 | # ALSA portion | |
1482 | options snd cards_limit=2 | |
1483 | alias snd-card-0 snd-interwave | |
1484 | alias snd-card-1 snd-ens1371 | |
1485 | options snd-interwave index=0 | |
1486 | options snd-ens1371 index=1 | |
1487 | # OSS/Free portion | |
1488 | alias sound-slot-0 snd-interwave | |
1489 | alias sound-slot-1 snd-ens1371 | |
1490 | ----- /etc/moprobe.conf | |
1491 | ||
1492 | In this example, the interwave card is always loaded as the first card | |
1493 | (index 0) and ens1371 as the second (index 1). | |
1494 | ||
1495 | ||
1496 | ALSA PCM devices to OSS devices mapping | |
1497 | ======================================= | |
1498 | ||
1499 | /dev/snd/pcmC0D0[c|p] -> /dev/audio0 (/dev/audio) -> minor 4 | |
1500 | /dev/snd/pcmC0D0[c|p] -> /dev/dsp0 (/dev/dsp) -> minor 3 | |
1501 | /dev/snd/pcmC0D1[c|p] -> /dev/adsp0 (/dev/adsp) -> minor 12 | |
1502 | /dev/snd/pcmC1D0[c|p] -> /dev/audio1 -> minor 4+16 = 20 | |
1503 | /dev/snd/pcmC1D0[c|p] -> /dev/dsp1 -> minor 3+16 = 19 | |
1504 | /dev/snd/pcmC1D1[c|p] -> /dev/adsp1 -> minor 12+16 = 28 | |
1505 | /dev/snd/pcmC2D0[c|p] -> /dev/audio2 -> minor 4+32 = 36 | |
1506 | /dev/snd/pcmC2D0[c|p] -> /dev/dsp2 -> minor 3+32 = 39 | |
1507 | /dev/snd/pcmC2D1[c|p] -> /dev/adsp2 -> minor 12+32 = 44 | |
1508 | ||
1509 | The first number from /dev/snd/pcmC{X}D{Y}[c|p] expression means | |
1510 | sound card number and second means device number. The ALSA devices | |
1511 | have either 'c' or 'p' suffix indicating the direction, capture and | |
1512 | playback, respectively. | |
1513 | ||
1514 | Please note that the device mapping above may be varied via the module | |
1515 | options of snd-pcm-oss module. | |
1516 | ||
1517 | ||
1518 | DEVFS support | |
1519 | ============= | |
1520 | ||
1521 | The ALSA driver fully supports the devfs extension. | |
1522 | You should add lines below to your devfsd.conf file: | |
1523 | ||
1524 | LOOKUP snd MODLOAD ACTION snd | |
1525 | REGISTER ^sound/.* PERMISSIONS root.audio 660 | |
1526 | REGISTER ^snd/.* PERMISSIONS root.audio 660 | |
1527 | ||
1528 | Warning: These lines assume that you have the audio group in your system. | |
1529 | Otherwise replace audio word with another group name (root for | |
1530 | example). | |
1531 | ||
1532 | ||
1533 | Proc interfaces (/proc/asound) | |
1534 | ============================== | |
1535 | ||
1536 | /proc/asound/card#/pcm#[cp]/oss | |
1537 | ------------------------------- | |
1538 | String "erase" - erase all additional informations about OSS applications | |
1539 | String "<app_name> <fragments> <fragment_size> [<options>]" | |
1540 | ||
1541 | <app_name> - name of application with (higher priority) or without path | |
1542 | <fragments> - number of fragments or zero if auto | |
1543 | <fragment_size> - size of fragment in bytes or zero if auto | |
1544 | <options> - optional parameters | |
1545 | - disable the application tries to open a pcm device for | |
1546 | this channel but does not want to use it. | |
1547 | (Cause a bug or mmap needs) | |
1548 | It's good for Quake etc... | |
1549 | - direct don't use plugins | |
1550 | - block force block mode (rvplayer) | |
1551 | - non-block force non-block mode | |
1552 | - whole-frag write only whole fragments (optimization affecting | |
1553 | playback only) | |
1554 | - no-silence do not fill silence ahead to avoid clicks | |
1555 | ||
1556 | Example: echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/oss | |
1557 | echo "squake 0 0 disable" > /proc/asound/card0/pcm0c/oss | |
1558 | echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss | |
1559 | ||
1560 | ||
b6a96915 TI |
1561 | Early Buffer Allocation |
1562 | ======================= | |
1563 | ||
1564 | Some drivers (e.g. hdsp) require the large contiguous buffers, and | |
1565 | sometimes it's too late to find such spaces when the driver module is | |
1566 | actually loaded due to memory fragmentation. You can pre-allocate the | |
1567 | PCM buffers by loading snd-page-alloc module and write commands to its | |
1568 | proc file in prior, for example, in the early boot stage like | |
1569 | /etc/init.d/*.local scripts. | |
1570 | ||
1571 | Reading the proc file /proc/drivers/snd-page-alloc shows the current | |
1572 | usage of page allocation. In writing, you can send the following | |
1573 | commands to the snd-page-alloc driver: | |
1574 | ||
1575 | - add VENDOR DEVICE MASK SIZE BUFFERS | |
1576 | ||
1577 | VENDOR and DEVICE are PCI vendor and device IDs. They take | |
1578 | integer numbers (0x prefix is needed for the hex). | |
1579 | MASK is the PCI DMA mask. Pass 0 if not restricted. | |
1580 | SIZE is the size of each buffer to allocate. You can pass | |
1581 | k and m suffix for KB and MB. The max number is 16MB. | |
1582 | BUFFERS is the number of buffers to allocate. It must be greater | |
1583 | than 0. The max number is 4. | |
1584 | ||
1585 | - erase | |
1586 | ||
1587 | This will erase the all pre-allocated buffers which are not in | |
1588 | use. | |
1589 | ||
1590 | ||
1da177e4 LT |
1591 | Links |
1592 | ===== | |
1593 | ||
1594 | ALSA project homepage | |
1595 | http://www.alsa-project.org | |
1596 |